package cn.maxhou.utils;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

public class MyBatisUtil {
    private static SqlSessionFactory factory;

    static {//通过静态代码块，唯一一次创建SqlSessioinFactory实例
        try{
            InputStream is = Resources.getResourceAsStream("mybatis-config.xml");
            factory = new SqlSessionFactoryBuilder().build(is);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    // 创建并返回 SqlSession 实例
    public static SqlSession createSqlSession(){
        return factory.openSession(false);//关闭自动提交开启事务
    }

    public static void closeSqlSession(SqlSession sqlSession){
        if(sqlSession != null){
            sqlSession.close();
        }
    }
}
